Algebra: A Combined Approach (4th Edition)

by Martin-Gay, Elayn

Published by Pearson

ISBN 10: 0321726391

ISBN 13: 978-0-32172-639-1

Chapter 7 - Section 7.1 - Simplifying Rational Expressions - Exercise Set - Page 490: 26

Answer

$\dfrac{y-9}{9-y}=-1$

Work Step by Step

$\dfrac{y-9}{9-y}$ Rewrite the expression by changing the sign of the denominator. To do so, also change the sign of the fraction. Then, simplify: $\dfrac{y-9}{9-y}=-\dfrac{y-9}{y-9}=-1$

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